When a British soldier on patrol in Afghanistan set a rigged grenade off by mistake, his first thought was for the safety of his comrades. So, in order to protect them, Lance-Corporal David Croucher dived on the grenade and turned on his side, with only a backpack—containing a first-aid kit, 66-millimeter rocket and… »3/30/08 7:00pm 3/30/08 7:00pm